Pet door



FIG. 1 is a perspective view of the pet door of the present invention;

FIG. 2 is a front elevation view of the pet door of the presentinvention;

FIG. 3 is a rear elevation view of the pet door of the presentinvention;

FIG. 4 is a left side elevation view of the pet door of the presentinvention;

FIG. 5 is a right side elevation view of the pet door of the presentinvention;

FIG. 6 is a top plan view of the pet door of the present invention; and,

FIG. 7 is a bottom plan view of the pet door of the present invention.

The ornamental design for a pet door, as shown and described.